#modal-container{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: none;
}
#modal-content{
    position: absolute;
    top: 50%;
    left:50%;
    transform: translate(-50%,-50%);
    background-color: white;
    padding: 20px;
}
#close-modal{
    float:right;
}